Where does “Casca” come from?

Casca (Latin) comes from Latin cascus, from Proto-Italic kaskos, from Proto-Indo-European ḱh₁s-ko-.

Ancestry of “Casca”, step by step

Step	Language	Word	Meaning
1	Latin	cascus	ancient, olden
2	Proto-Italic	kaskos	—
3	Proto-Indo-European	ḱh₁s-ko-	—

Casca — Etymology, Origin & Word History | Etymology Explorer